photo-litho



hinge-block a of the hammer is connected to a vnitsh gutters genet titre,

HRAM' HER-RICK, OF BOSTON, MASSACHUSETTS. Letters Patent' .N 62,134, dated February 19, 1867.

PIANO-FORTE AGTON.

@the rlgshule einen tn in tigen sttcrs atnrt mit mating pmt nf tlg sami.

TO ALL PERSONS TOVWPOM THESE PRESENTS SHALL COME:

Be it known that I, `Humm HERRICK, or" B invented u new and useful Piano-Forte Actie oston, in the county of Suffolk, and Stute of Massachusetts, have u; and do hereby declare the same to be full)v described in the following specification, and represented in the accompanying drawing, which is u side elevation of it.

The object of my invention is to insure e. repeat or rapid repetition of the blo piano-forte action, und also ease of touch or action of the key oi` the hammer. after euch blow, is prevented from suddenly dropl'nino C, so as to prevent the ily fi hinffe-block of the hummer. This is aeeomnlished b means of an arm a l .Y

of the hummer of the To obtain such, the hummer, 'om entering the notch o1" the extended upward from vthe key, and connected with the hinge-block by o string. To this arm und the key on adjusting-lever und :L regulating-screw and un arresting-button :1re applied, as hereinafter described, the same being for the purpose of adjusting the erm, und causing to correctly perform its function.

In the drawing, A denotes the key; B, the hammer; und C, the ily or 'jack of o piono-forte action. The

K n urm, D, by mea-ns of o silken or other proper cord, l1, E being n. curve extended upward from the lief A, or from a. lever, E, arranged thereon lever beingt movable in vertical directions on n fulcrum, c, free end of the lever E is :i padded button, c, iixed on the lower end of a regulatingthrough n stationery rail, F. The remainder of the action is ns exhibited in tl common use. When the key is struck the arm D and its string control it in its action as to enable the lvv suoli arm as reuresented, sueli going through :t block, d, xed on the key. Over the screw, f, which is screwed 1e drawing, und is such as is in b assist in elerntinfcr the hammer; and they se to uct with precision in the most rapid movement oi' the key. The lever E is brought against the arresting-hinten e while the key A is in movement. By menus ot' the lever E, and the regulutngscrew und its button, the arm may he adjusted or mode to perform it With my new or improved piano-forte notion rapid trilling" e advantage.

s dutyv to great advantage. :in be performed with great certainty und to great I claim the coinbinution of the arm D and it with the piuma-forte action, consisting prineipall I also claim the combination us Well equivalent. thereof', with the arm D, und its s connecting cord or the equivalent or equivalents thereof, y ot" the key A, hummer B, und jock or ily C, us described. as the arrangement of the lever E, und the ud justnble stop e, or the connection cord b, combined with the piuno u ction` as described. HRAM BEREICH.

Witnesses?.

R. H. EDDY, AF. P. HALE, Jr. 

